I own a 1998 jeep cherokee 4.0 I6, and a few days ago I changed my oil. I drained all the old oil out, put a new filter in, and added 6 quarts of 5w30. I turn my jeep on.. check gauges light is on (no oil pressure). I checked the dipstick and it was alittle over the safe mark, so i drained about 1/4 - 1/2 a quart out so it was in the middle of the safe zone on the stick. Turned the jeep back on, stupid light is still on (oil pressure goes up between 0 and the first notch, and my battery sence its cold out is at the lowest mark also).

I ran the jeep alittle bit when it was over the safe mark, (drove about 3 miles from my gf's house to mine). My main question is, does the light need to be reset.. or did i really mess my engine up and now just have 0 oil pressure. Is there anything else I can do before I say screw it and take it to a shop?